Emanuel statiber



lirnrn STATES EMANUEL STAUBER, OF BERLIN, GERMANY.

DRYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 606,097, dated June 21,1898. Application filed August 15, 1896. Renewed March 2B, 1298. semiNo. 675.513. (No model.)

T0 (6 whom it may concern:

Be it known that I, EMANUEL-STAUBER, engineer, a subject of the Emperorof Austria- Hungary, and a resident of the city of Berlin, GermanEmpire, have invented certain new and useful Improvements in Methods ofand Apparatus for Drying Moist Materials, (for which I have obtainedpatents in England, No. 9,665, dated May 6, 1896; in Austria, No. ato/1,976, dated May 16, 1896; in Denmark, No. 560, dated May 3, 1896,and in Belgium, No. 120,118, dated March 3, 1896, and No.

121,109, dated April 29, 1896,) of wliichthe following is aspecification.

My invention relates to means and apparatus for drying material and isso constructed, as hereinafter described and fully shown, as to exposethe wet material at first to an intense fire heat and then to a steamheat, thus drying the same in a most thorough and rapid manner. In anapparatus for drying by direct fire heat before used danger wasexperienced from burning, and, on the other hand, if steam was aloneused it tooli some time to satisfactorily dry the material.

In the accompanying drawing the figure shows a vertical sectional viewof my device, in which A is a casing having therein a fire-rack a andboiler Z7. Connected with the said boiler in any ordinary manner is afeed-pipe O and safety-valve D. One end of the boiler rests in thecasing A, while the other end is sup-' ported by standards E, one ofwhich is shown. Connected to said boiler is a horizontal steampipe 0,running through and beyond the casing A. At the end of the said casingfarthest from the said fire-rack and on the upper portion of the same isan oblique opening d, through which passes a funnel d. At the same endof the said casing is a shoulder F, in which suitably and rotatablymounted is one end of the cylinder e, having an annular shoulder Fadjacent to said shoulder F. The other end of said cylinder has a cap orend piece h, having an annular inwardly-directed shoulder or flange H,in which the free end of the said cylinder is rotatably mounted. Anopening K is provided at the lower portion of the said flange H, whilean exhaustpipe '5 is integrally formed on the upper part. In the end ofthe said cylinder and so arranged as to register as the same revolves:with said opening K are openings g. ,A spiral flange f is located insaid cylinder and around said steam-pipe c and is so arranged that asthe cylinder is rotated material put in the funnel d, which is inconnection with said cylinder,will be carried toward the open- ,ings g.Secured 011 the exterior of said cylinder and near the ends of the sameare encircling bands K with teeth on the outer edges thereof. whilebelow the cylinder suitably mounted -are gear-wheels K, engaging saidteeth and thus rotating said cylinder.

Adjacent to'the closed end of the cylinder is an oven B,which hassecured therein hollow or heating plates q, made of any ordinary material and so arranged and secured that every other one projectsfarther toward the cylinder'side of the oven, while the interveningshelves overlap in the opposite direction.

lhe steam-pipe c enters the oven through an opening 0 in the wall of thesame and is connected with the longest hollow shelf or heating platewhich is in communication with the next shelf by a pipe w. Thus in turneach shelf is joined to the shelf above by pipes to. Secured to theupper shelf at the end opposite to said cylinder is an exhaust-pipe to,which passes through an opening to in the top of the oven B. Suitablymounted at either end of the said shelves or heating-plates whichproject farthest toward the cylinder end of the oven are rotatingrollers 1), each pair of which carries an endless transport-band 0, onwhich is secured driving plates or arms 19. These plates are so arrangedthat they project both above and below said bands and are adapted todrive any material on the upper shelf to the end thereof and return thesame on thenext succeeding lower shelf, as will be readily understoodfrom the drawing.

A reservoir Z extends from under the opening K in the cylinder 6 in adownward then upward direction, where it is secured to the oven 13. Afunnel n is placed in the upper portion of the oven B and has thereinsecured disintegrators n 'n, the operation of which may be readilyunderstood.

An endless chain m, carrying buckets m, is mounted at the cylinder endof the oven and is adapted to gather the material from the reservoir Zand carry the same up to the funnel 91, thus exposing the material to anatmospheric drying. An exhaust-pipe t is in connection with said oven atits upper part by means of openings t, while an opening R, with aguiding-plate l, is provided in the lower part of said oven farthestfrom said cylinder.

The operation of the device maybe readily understood when taken inconnection with the accompanying drawing. The material inserted in thefunnel cl is guided into the cylinder 6, and by means of the spiralflange the same is carried through the openings g, i, and 7.", into thereservoir Z, where the buckets on the endless chain carry said materialup to the funnel n. Here the disintegrators or act on the material andforce it into the upper shelf q. The bands, with driving-plates 17, nowshove, push, or drive it along the said shelf and drop it over the endthereof, where it is carried back by the same arms. Next it drops overon the next shelf, where a different band, with its plates, puts itthrough a similar operation. The iire heat entering the open end of thecylinder comes in direct contact with the wet material, thus subjectingit to an intense heat, and owing to its wetness no danger of burningensues. An exhaustpipe i carries off this heat, together with the steamof the wet material, which is then, as before explained, passed on tothe next stage. The steam passing through the pipe 0 enters the hollowshelves or plates in succession and is drawn through by the exhaust-pipeu, while'the exhaust-pipe t serves to draw out of the oven all dampnessensuin; from the drying operation.

IIavin g now described my invention, what I wish to claim and protect byLetters Patent 1s In a device for drying wet material a casing, afire'rack therein, a boiler above said rack and within said casing, ashoulder in said casing end opposite said fire-rack a rotatable cylinderengaging said shoulder, a cap, an annular inwardly-directed flangesecured thereto having an openin g in the lower part thereof and beingadapted to receive the other end of said cylinder, a steam-pipe inconnection with said boiler and passing lengthwise through saidcylinder, a spiral flange within said cylinder and surrounding saidpipe, an exhaust-pipe in connection with said cylinder, encircling bandshaving teeth on the outer end thereof, gear-wheels adapted to engage thesame and a funnel in said casing and entering said cylinder, all of thesaid parts being combined substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EMANUEL S'IAUBER.

Witnesses:

HENRY lIAsPEn, W. IIAUP r.

